Basic Auth Header Generator Online — Free & Private

A free edge API by formatho.com, privacy-first developer tools.

Open the full browser tool →

Free, no signup, runs entirely in your browser — your data never leaves your device.

🔓 Free 🔒 Zero tracking 🚫 No data collection ⚡ Edge-fast

Usage

curl "https://basic-auth-generator-formatho.filesformatho.workers.dev/api?user=admin&password=secret"
curl "https://basic-auth-generator-formatho.filesformatho.workers.dev/api?header=Basic%20YWRtaW46c2VjcmV0"
curl -X POST "https://basic-auth-generator-formatho.filesformatho.workers.dev/api"   -H "Content-Type: application/json"   -d '{"user":"admin","password":"secret"}'

Full parameter reference and live response: /api endpoint.

What is Basic Authentication?

HTTP Basic Authentication (RFC 7617) sends credentials with every request in the Authorization header. The user-id and password are joined with a colon (user:password), UTF-8 encoded, and base64-encoded — producing Authorization: Basic YWRtaW46c2VjcmV0. Base64 is encoding, not encryption: always use Basic Auth over HTTPS, prefer scoped tokens for third-party APIs, and never commit generated headers to source control.

Privacy-first: every request is processed in-memory on Cloudflare's edge and answered immediately. No logs, no analytics, no cookies, no data collection. See the Formatho privacy philosophy.

Full browser tool

Prefer a UI? Use the complete client-side version — encoding happens right in your browser: Basic Auth Generator on formatho.com.

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